Gary Barlow: 'I'll Quit If Geri Comes Back To X Factor'
He labels former Spice Girl 'crackers' and says crowd didn't like her...
The X Factor judge told The Sun: "She's crackers. How you see her on TV is exactly how she is in real life. The crowd really didn't like her. She got booed all day long. She was a bit over-excited.
"She'd been told she was auditioning for the role and, bless her, I think she tried a bit too hard. I do love her for being her though, we had fun backstage. She's sweet but mad."
And when asked if he expected the Spice Girls star to make a return to the show, he replied: "I doubt it. And if she is, I may be going."
And Gary twisted the knife further by heaping praise on Geri's fellow Spice Girl Mel B - who also did a guest stint on the panel.
He said: “Mel was brilliant. It actually gave me a bit of a holiday the day she was there.
"I'm normally the one who delivers the bad news but she was doing it all so I could just sit there, going, 'Oh, that’s awful, what she said' but secretly loving it."
Geri recently had a much-publicised fling with Russell Brand.